6

Browse to the folder where you did extract the ca.zip file.
Select ca.crt and then Open
Click Next

7

Check following settings:Enable compression on the VPN link
Route all client traffic through the VPN server
Allow other network devices to connect through this Synology servers's Internet connectionThen click on Apply

8

Ensure that you have enabled SSH connection to Synology and connect to your Synology through SSH. In our case we use a tool called Putty, which can be download from here: http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
Login with root and then write cd /usr/syno/etc/synovpnclient/openvpn/
Then press Enter

9

Write ls -la to find the name of the VPN client settings file. Look for client_XXXXXXXXXXX, in my case it's client_o1413122446, but probably not in your case.

10

Now past following script and remember to change client_XXXXXXXXXXX to the one you have:

11

Now it's time to edit the port number for the VPN connection by editing the client_XXXXXXXXXX file.
In our case we use a tool called viPast this line and then press Enter: vi client_YOURFILENUMBER

12

Go to line remote vpn-se8.privatevpn.com 1194 and remove port number 1194 and replace it with 53Hold down left-shift + R to edit. Press ESC to exit edit mode.
Now write :wq! and then press Enter to save and exit.

13

Go back to Control Panel - VPN and click om Connect.
Now you're connected!

Important if you want to change the VPN server!!!
DO NOT change the server address on the Control Panel - VPN, this must be done via SSH by editing the client_XXXXXXXXX file on the line remote vpn-se8.privatevpn.com 53Otherwise all changed settings like port will be overwritten with default settings and the VPN stops work.